<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    *{
      margin: 0;
      padding: 0;
    }
    .box {
      width: 100px;
      height: 100px;
      border-radius: 50%;
      margin: 200px auto;
      background-color: skyblue;
    
      animation: move 5s linear infinite;
    }
    

    @keyframes move {
      0% {
        transform: translateY(0);
      }
      25% {
        transform: translatex(500px);
      }
      50% {
        transform: translateY(-500px,500px);
      }
      75% {
        transform: translatex(-500px);
      }
      100% {
        transform: translateY(-500px);
      }
    }
  </style>
</head>
<body>
  <div class="box"></div>
</body>
</html>